Small antique hand held gold or coin scale with original box, very rare

This is a very rare scale because of it's size. The smallest one I've ever seen. The box measures a little over 5½" long and less than 2" wide. the bar on the scale is around 5" and the plates around 2". This scale is close to 200 years old, and I would love to have the gold nuggets that were measured in it once. I consider this being in good condition but please look at the photos closely. On the bottom of the plates there seem to be some numbers stamped but they are very faint. The scale itself, the latch and hinges on the box are still in working condition. There are no weighs. If you have a question please ask.